Knockdown scaffolding.



G. B. KEPOVER.

KNOOKPOWN SOAI'POLDING. APPLICATION FILED NOV. 26, 1910.

Patenfid Dec! 12, 1911.

COLUMBIA PLANOGRAPH c0..WAsHlNGToN. D. C.

GEORGE 1B; KEFOVER, OF UNIONTOWN, PENNSYLVANIA.-

KNOCKIDOWN SCAFFOLDING.-

Specification of Letters Patent.

Patented Dec. 12, 1911.

Application filed November 26, 1910. Serial No. 594,369.

To all whom it may concern:

Be it known that I, GEORGE B. KErovnR, a citizen of the United States,residing at Uniontown, in the county of Fayette and State ofPennsylvania, have invented certain new and useful Improvements inKnockdown Scaffolding, of which the following is a specification.

My invention relates to improvements in fastening together sections ofknockdown scaffolding and which is more particularly adapted to besupported on an adjustable bracket shown and described in my co-pendingapplication, Serial No. 581,390, filed Sept. 10, 1910.

The object of my invention is to construct a scaffolding which willconsist of strong, durable, and light sections which can be readilyassembled in any lengths and securely held in position, while at thesame time, the sections may be easily separated and transported Withoutinjury.

My invention consists of features of construction and relativearrangements of the several parts which will be hereinafter more fullyand clearly described, and particularly pointed out in the appendedclaims.

Referring to the accompanying drawings, in which the several parts areindicated by the same reference characters in the several figures:Figure 1, is a bottom plan view of one end of a scaffolding section;Fig. 2, is a similar view of the opposite end of a section; Fig. 3, is atop view of the ends, after the sections are locked together. Fig. 4, isa section on line IVIV of Fig. 3; and Fig. 5 is a side view of Fig. 2,after retaining clamps are put in place.

Referring to the drawings in whichI have shown my preferred form, saidscaflolding lengths or sections, 23, 23, are from eight to ten feetlong, and are preferably made of metal frames 24, 24, one side of whichis only provided with a covering of thin sheet iron. One end of each ofthese sections 23, 23, is bifurcated, or having two tongues, as shown at25, while at the other end is constructed a socket 26. These two endsare proportioned so that tongues 25 will readily ends, and secured tothe end sections or to each other by bolts 29, passing through properlyspaced and registering holes in the platform sections 23, 23, andsections of the clamps 27 and 28, as indicated in Figs. 2 and 3. For afurther securing of the ends 25 and 26 together, and to prevent thesections from slipping apart at their ends, I have provided anadditional holding clamp. which consists of a double U-shaped flat bar30, which is secured to the socket end 26, by means of bolts 31. Theouter walls of the tongue end 25, are provided wit-h notches32, andsimilar notches 33, are cut in the inner walls of the socket end 26,said notches registering and being in alinement with each other when theends 25 and 26 are to be locked together.

34, is a locking plate which is pressed outwardly and away from thenotches 32, and 33, by means of coil springs 35, surrounding the bolt-s31. The locking plate 34 is engaged by a bolt 36, and by turning thewinged nut 37, the said plate 34, can be made to engage or disengage thenotches 32, and 33, and so look or unlock the ends 25 and 26, againstlongitudinal movement.

When it is desired to disconnect the sections, all that is necessary isto turn the winged nut 37 the engaging plate 34 passes out of thenotches 32, and 33, and permits the ends and sections to be slippedapart.

It will be readily seen from the herein disclosed construction, thatapplicant has devised a compact, light, and strong form of scaffoldingsections, which are provided at their ends with cooperating features ofconstruction which can be securely held to gether in any lengths.

What I claim is 1. A knockdown scafiolding comprising separable flatsections, each section having at one end a tongue and at its other end aU-shaped socket adapted to snugly receive a tongue and clamp members onopposite sides of the said sections, one of said clamp members engaginga seat in said tongue and socket ends and arranged transversely thereofto prevent disengaging of the sections.

2. A knockdown scaffolding comprising separable sections, each sectionhaving atone end a tongue and at its other end a socket adapted tosnugly receive a tongue, registering recesses, or notches in said tongueand socket ends, and a clamp adapt ed to be seated in said recesses andlock the ends of the sections together.

3. A knockdown scaffolding comprising separable and dished sections,each section having at one end tongues and at its other end a socketadapted to snugly receive said tongues, registering recesses or notchesin said tongues and socket ends, and a clamp GEORGE B. KEFOVER.Witnesses GEO. W. SEMANs, LEE SMITH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. G.

